Water Pollution Control Act Enforcement Rules Article 4-2

The term “household” as referred in Article 11 (2) and Item 7 of Subparagraph 2 of (3) and Article 44 (2) of the Act refers to those that discharge sewage rather than the targets from which the fees are collected in accordance with Article 11 (1).
中文原文 水污染防治法施行細則第4-2條
本法第十一條第二項、第三項第二款第七目及第四十四條第二項所稱家戶,指本法第十一條第一項收費對象以外之污水排放者。

English translation for reference only; the Chinese text prevails. Not legal advice.